I have had one heck of a time trying to get paid out from the AirBNB Host Guarantee.

My 2 cents to the mix would be The ADU is the only way so far [SB 9 and 10 not withstanding] - You should be able to take the SFR and do an attached JADU up to 500 sq ft, then you can [lot size permitting and every city has its own code so do some research] another detached or even attached regular ADU - and as long as you live there as owner occupied you can live in the SFR part, rent out the ADU and JADU- the twist we do is to rent out 30+ days as a furnished rental.

You’ve turned your appreciation from capital gains in to regular income taxed at a much higher rate.

My wife and I host ours at a local winery since we like wine.

Don't know of any specific to multifamily, but virtually every major SoCal city has a regular REI meetup.

I don't want to run in blindly.If I was regularly analyzing properties to seriously consider purchasing them, then by all means, I see how it pays for itself.

Should I manage A/c units through a regular a/C vendor instead of property management ?

Besides, MTM is not set in stone and you as a new owner may change it to regular long term lease. 

@Chris SanchezHey Chris, there are two that I know of and regularly attend.

With a HELOC, you could simply take out the $200k right before the purchase, but with a cash out refi you'd had already withdrawn $300k meaning you paid origination fees on an extra $100k that wasn't needed and you have interest charges for an extra $100k over the two months while you were waiting.I personally prefer not using hard money lenders as I don't want to be stuck with high interest amounts if I could avoid them with a HELOC, but I know many other investors who use them regularly without problems.